<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      let a = "heorasads";
      let re = /s/;
      console.log(re.exec(a));
      // 分组 小括号的优先级
      let str = "<div>我的{{name}}</div>";
      let pattern = /{{([a-zA-Z]+)}}/;
      let res = pattern.exec(str);
      console.log(res);
    </script>
  </body>
</html>
